4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• There is a risk of fire and explosion.
- Inert gas (nitrogen) should be used when you check plumbing leaks, cleaning or repairs of pipes
etc. If you are using combustible gases including oxygen, product may have the risk of fires and ex-
plosions.
• Use a vacuum pump or Inert (nitrogen) gas when doing leakage test or air purge. Do not compress
air or Oxygen and Do not use Flammable gases. Otherwise, it may cause fire or explosion.
- There is the risk of death, injury, fire or explosion.
Operation
• Do not store or use flammable gas or combustibles near the product.
- There is risk of fire or failure of product.
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or repair of product.
- Low refrigerant levels may cause failure of product.
• Install the drain hose to ensure that water is drained away properly.
- A bad connection may cause water leakage.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the product where the noise or hot air from the outdoor unit could damage the neigh-
borhoods.
- It may cause a problem for your neighbors.
• Use two or more people to lift and transport the product.
- Avoid personal injury.
• Do not install the product where it will be exposed to sea wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator
fins, could cause product malfunction or inefficient operation.
• Thickness of copper pipes used are as shown “Flaring work” Table.
- Never use copper pipes thinner than that in the table even when it is available on the mar-
ket
• Do not use copper pipes having a collapsed.
- Otherwise, the expansion valve or capillary tube may become blocked with contaminants.
• For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant.
- Using of (R22) piping, flare nut and tools may cause abnormally high pressure in the refriger-
ant cycle (piping), and possibly result in explosion and injury.
• It is desirable that the amount of residual oil less than 40 mg/10m.
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